Work while you work, and play while you play- this is a basic rule of self-discipline-- Theodor Adorno
Self-discipline is the process of decluttering ourselves. Successful persons will be self-disciplined. You can bring self-control by cultivating self-discipline. It is the best way to attain self -control. Self-control is a holistic process of controlling your thoughts, emotions, and your behavioural habits. If you can master these three things, you are a successful person.
If you want to cultivate this attribute in yourself,you have to set it as a goal. Once you set it you should work hard to achieve it. This has been tested by a lot of people from ancient times. With great difficulty, they have achieved self-discipline. Jim Rohn has rightly said that Self-discipline is the bridge between goal and accomplishment.